Another day, another teaser from the ever-impressive Arcade Fire, with Win Butler and friends today revealing that their fourth studio album Reflektor, to be released next month, is a double album, with many of the tracks running up to the 7-minute mark.

Speaking to BBC Radio 1‘s Zane Lowe, Butler said the group had written 50 or 60 songs for the album, which they then narrowed down to the final 13, saying, “[It] made more sense to stretch it out to two records. I never wanted to be in a band that could never play whatever music we wanted to.”

He also confirmed that there are “a couple of other seven-minute songs on the record,” adding, “Some of the stuff on here is going to surprise people. It’s even more different than Reflektor [the single].”

On the elaborate campaign behind the release of the first single and album announcement, Butler said that the band “don’t think of it as promo — it’s more of a weird art project.”

The Montreal-based 8-piece also put on a secret show in their hometown on Monday night under the name The Reflektors, only admitting gig goers who dressed up in a costume or formal wear, and playing nothing but new material. The outfit took to the stage wearing the papier-mâché heads from the Anton Corbijn-directed Reflektor video and were joined by violinist Sarah Neufeld, who’s been missing from promo material for the new album up to this point.

Arcade Fire have confirmed a world tour for Reflektor, which will include their performances at the Big Day Out, making us Down Under the some of the first in the world to see the full live show. Reflektor is released on 29th October.